CN109707777B - Damper, wind generating set and mounting method - Google Patents
Damper, wind generating set and mounting method Download PDFInfo
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- CN109707777B CN109707777B CN201811639065.5A CN201811639065A CN109707777B CN 109707777 B CN109707777 B CN 109707777B CN 201811639065 A CN201811639065 A CN 201811639065A CN 109707777 B CN109707777 B CN 109707777B
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000013016 damping Methods 0.000 claims abstract description 74
- 230000000712 assembly Effects 0.000 claims description 11
- 238000000429 assembly Methods 0.000 claims description 11
- 229920001971 elastomer Polymers 0.000 claims description 4
- 239000000806 elastomer Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 15
- 238000009434 installation Methods 0.000 abstract description 13
- 230000008901 benefit Effects 0.000 abstract description 10
- 238000010248 power generation Methods 0.000 abstract description 9
- 239000000758 substrate Substances 0.000 description 18
- 238000005265 energy consumption Methods 0.000 description 7
- 238000001179 sorption measurement Methods 0.000 description 6
- 238000005381 potential energy Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention relates to a damper, a wind generating set and an installation method, wherein the damper comprises the following components: a base having a predetermined length and width; the guide part is connected to the base in a laminated mode and extends along the length direction of the base, the surface, far away from the base, of the guide part is an arc-shaped surface, and the arc-shaped surface is sunken towards the direction close to the base; the mass block is clamped on the guide part and matched with the arc-shaped surface, and can move along the arc-shaped track of the arc-shaped surface in the length direction; and the two ends of the mass block in the width direction of the base are respectively connected with damping parts, and each damping part is respectively supported on the base and can absorb the kinetic energy of the mass block during movement. According to the damper, the wind generating set and the installation method provided by the embodiment of the invention, the damper is low in cost and not easy to damage, has a better vibration reduction effect on the wind generating set, and can ensure the operation safety and the power generation benefit of the wind generating set.
Description
Technical Field
The invention relates to the technical field of wind power, in particular to a damper, a wind generating set and an installation method.
Background
The tower of the wind generating set is a supporting structure of the wind generating set, and the safety and the stability of the structure of the tower are related to the safety and the performance of the whole wind generating set. With the continuous increase of the capacity of the wind generating set, the height of the tower is continuously increased, the frequency of the tower is continuously reduced, and the problem of tower vibration is more and more prominent. In order to ensure the safe and stable operation of the tower and the whole machine, a damper needs to be installed on the wind generating set.
However, after the damper in the prior art is acted for a period of time, a spring system for realizing the frequency characteristic of the damper is easy to lose efficacy after long-time operation, so that the frequency of the damper is not matched with the frequency of a tower, and the damping effect of the damper on the wind generating set is further extremely reduced, so that the maintenance cost of the damper is increased, more importantly, the vibration frequency of the wind generating set is increased due to the reduction of the vibration reduction effect of the damper, and the operation safety and the power generation benefit of the wind generating set are influenced.
Therefore, a new damper, wind turbine generator set and installation method are needed.
Disclosure of Invention
The embodiment of the invention provides a damper, a wind generating set and an installation method, wherein the damper is low in cost and not easy to damage, has a better vibration reduction effect on the wind generating set, and can ensure the operation safety and the power generation benefit of the wind generating set.
In one aspect, an embodiment of the present invention provides a damper, including: a base having a predetermined length and width; the guide part is connected to the base in a laminated mode and extends along the length direction of the base, the surface, far away from the base, of the guide part is an arc-shaped surface, and the arc-shaped surface is sunken towards the direction close to the base; the mass block is clamped on the guide part and matched with the arc-shaped surface, and can move along the arc-shaped track of the arc-shaped surface in the length direction; and the two ends of the mass block in the width direction of the base are respectively connected with damping parts, and each damping part is respectively supported on the base and can absorb the kinetic energy of the mass block during movement.
According to an aspect of the embodiment of the present invention, the guide member is a strip-shaped guide rail, the guide member further has a first side surface and a second side surface which are oppositely arranged in the width direction and are respectively connected with the arc-shaped surface, one end of the mass block facing the guide member has a U-shaped sliding groove, and the mass block is clamped on the guide member through the U-shaped sliding groove and is in sliding fit with the arc-shaped surface and the first side surface and/or the second side surface.
According to one aspect of the embodiment of the invention, the side wall enclosing to form the U-shaped sliding chute is provided with the guide wheel, and the mass block is in rolling fit with the arc-shaped surface and the first side surface and/or the second side surface through the guide wheel.
According to an aspect of an embodiment of the present invention, the base includes a base plate, and two support assemblies provided to the base plate, the guide member being connected to the base plate, the two support assemblies being oppositely provided to both sides of the guide member in a width direction, each support assembly being oppositely provided to at least one damping member for supporting the damping member.
According to an aspect of an embodiment of the present invention, each of the support assemblies includes a support plate connected with the base plate and a friction plate connected to the support plate and extending to the guide member in the width direction; the damping part comprises a connecting rod and a friction disc which are rotationally connected with each other, the friction disc is supported on the friction plate and is in friction fit with the friction plate, and the damping part is rotationally connected with the mass block through the connecting rod.
According to one aspect of the embodiment of the invention, the friction disc is provided with a magnetic adsorption member, and the friction disc is positioned between the magnetic adsorption member and the friction plate and can be magnetically adsorbed with the friction plate.
According to an aspect of an embodiment of the invention, the magnetic attraction member is a bar-like structure detachably attached to the friction disc.
According to an aspect of the embodiment of the present invention, the base further includes a stopper plate, the bottom plate is connected to both ends in the length direction, and the stopper plates abut against the guide member to restrict the mass from being separated from the guide member in the length direction.
According to an aspect of an embodiment of the invention, each stop plate is provided with an elastic body on a surface facing the mass, and a projection of the elastic body in a length direction at least partially covers the mass.
According to an aspect of the embodiment of the invention, the mass block comprises a substrate, a plurality of sheets stacked on the substrate, and a fastener, wherein the plurality of sheets are detachably connected with the substrate through the fastener.
In another aspect, an embodiment of the present invention provides a wind turbine generator system, including: a tower; the nacelle is arranged on the tower and comprises a nacelle platform arranged close to one end of the tower; an impeller connected to the nacelle; in the damper, the damper is located in the nacelle, and the base is connected to the nacelle platform.
According to another aspect of an embodiment of the present invention, the guide member extends in a direction intersecting the axis of rotation of the impeller at an angle of 60 ° to 120 °.
In another aspect, an installation method of a damper is provided according to an embodiment of the present invention, for installing the damper to a nacelle platform, including the following steps:
a base and guide part mounting step, namely providing a base and a guide part which are connected in a stacked manner, connecting the base with an engine room platform, wherein the base has preset length and width, the guide part extends along the length direction of the base, the surface of the guide part far away from the base is an arc-shaped surface, and the arc-shaped surface is sunken towards the direction close to the base;
a mass block is provided, the mass block is clamped on the guide part and matched with the arc-shaped surface, so that the mass block can move along the arc-shaped track of the arc-shaped surface;
and a damping part mounting step, namely providing a damping part, respectively connecting the damping part on two sides of the mass block along the width direction of the base, and adjusting the damping part to enable one side of the damping part, which is far away from the mass block, to be always supported on the base so as to absorb the kinetic energy of the mass block during movement.
According to yet another aspect of an embodiment of the invention. In the step of mounting the mass block, the mass block is provided to comprise a substrate, a preset amount of sheet-shaped bodies and fasteners, and after the preset amount of sheet-shaped bodies are laminated on the substrate, the substrate and the preset amount of sheet-shaped bodies are penetrated and connected with each other through the fasteners to form the mass block.
According to the damper, the wind generating set and the installation method provided by the embodiment of the invention, the damper comprises a base, a guide component, a mass block and a damping component, wherein the guide component is connected to the base in a stacking mode and extends along the length direction of the base, and the mass block is clamped on the guide component, can be matched with the arc-shaped surface of the guide component and can move along the arc-shaped track of the arc-shaped surface. When applied to a wind turbine generator system, the damper may be disposed within a nacelle of the wind turbine generator system, connected to a nacelle platform via a base. When the wind generating set operates and the engine room vibrates along with the tower, due to frequency matching, partial energy of the tower vibration is transmitted to the damper mass block through the engine room platform, the mass block moves along the arc-shaped track of the arc-shaped surface, and kinetic energy generated when the mass block moves is absorbed through the damping parts which are arranged on the two sides of the mass block and supported on the base in the motion process, so that the aim of damping the wind generating set is fulfilled. When external vibration energy is large, and mass block reciprocating motion amplitude is large, because the cambered surface is sunken towards the direction close to the base, along with the cambered surface both ends upwarp, mass block kinetic energy converts potential energy into gradually, and speed will descend, can reach the effect of slowing down and the locking to the mass block, avoids mass block and guide part to break away from, simultaneously, can also realize the attenuator frequency through realizing the cambered surface, and is not fragile, can guarantee the frequency of attenuator and wind generating set's vibration frequency matching all the time. Therefore, the damper provided by the embodiment of the invention has better safety performance while ensuring better vibration damping effect on the wind generating set, and can ensure the operation safety and the power generation benefit of the wind generating set.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of a wind turbine generator system according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a damper according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along A-A of FIG. 2;
FIG. 4 is a top view of a damper according to an embodiment of the present invention;
fig. 5 is a flow chart of a method of installing a damper according to an embodiment of the present invention.
Wherein:
x-length direction; y-width direction;
100-a damper;
10-a base; 11-a base plate; 12-a support assembly; 121-a support plate; 122-a friction plate; 13-a stop plate; 14-an elastomer;
20-a guide member; 21-arc surface; 22-a first side; 23-a second side;
30-a mass block; 31-a substrate; 32-a platelet; 33-a fastener; 34-a U-shaped chute; 35-a guide wheel;
40-a damping member; 41-a connecting rod; 411-a first bar; 412-a second bar;
42-a friction disk; 43-a magnetic attraction member;
200-a tower;
300-a nacelle; 301-a nacelle platform;
400-an impeller; 401-a hub; 402-a blade; 403-axis of revolution.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order to avoid unnecessarily obscuring the present invention; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The following description will be given with the directional terms as they are shown in the drawings, and will not limit the specific structure of the damper, the wind turbine generator system, and the installation method of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as either a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
The damper provided by the embodiment of the invention can be used for damping vibration of a vibrating object. Especially in wind power technology field, can be used for carrying out the damping to wind generating set. The following embodiments of the present invention describe the structure of the damper only by using the damper to damp the wind turbine generator system, but the application of the damper of the embodiments of the present invention is not limited to the following embodiments, and the damper may be mounted on and protect an object to be damped in other fields.
For a better understanding of the invention, a damper, a wind turbine generator set and a method of installation according to embodiments of the invention are described in detail below with reference to fig. 1 to 5.
Referring to fig. 1, fig. 1 shows a schematic structural diagram of a wind generating set according to an embodiment of the present invention, which mainly includes a tower 200, a nacelle 300, an impeller 400, a generator (not shown), and a damper 100, where the nacelle 300 is disposed at a top end of the tower 200 and includes a nacelle platform 301 disposed near the tower 200, and the generator is disposed in the nacelle 300, and may be located inside the nacelle 300, or may be located outside the nacelle 300. The impeller 400 includes a hub 401 and a plurality of blades 403 connected to the hub 401, and the impeller 400 is connected to a rotating shaft of the generator through the hub 401 thereof. When wind acts on the blades 403, the whole impeller 400 and the rotating shaft of the generator are driven to rotate, and the power generation requirement of the wind generating set is further met. Since the wind turbine generator set generates corresponding vibration when in operation, a damper 100 is further provided, the damper 100 being located inside the nacelle 300 and connected to the nacelle platform 301, as will be further described below with reference to fig. 2 to 4 for better understanding of the damper 100 according to an embodiment of the present invention.
Referring to fig. 2 to 4 together, fig. 2 is a schematic structural diagram of a damper 100 according to an embodiment of the present invention, fig. 3 is a sectional view taken along a-a direction in fig. 2, and fig. 4 is a top view of the damper 100 according to an embodiment of the present invention.
The damper 100 provided by the embodiment of the invention comprises a base 10, a guide part 20, a mass block 30 and a damping part 40, wherein the base 10 has a predetermined length and width, the guide part 20 is connected to the base 10 in a laminated manner and extends along the length direction X of the base 10, the surface of the guide part 20 far away from the base 10 is an arc-shaped surface 21, and the arc-shaped surface 21 is concave towards the direction close to the base 10. The mass 30 is snapped onto the guide 20 and engages the arcuate surface 21. In the length direction X of the base 10, the mass 30 can move along the arc-shaped trajectory of the arc-shaped surface 21. The mass 30 is connected with damping members 40 at both ends of the base 10 in the width direction Y, and each damping member 40 is supported by the base 10 and can absorb kinetic energy of the mass 30 when moving.
The damper 100 provided by the embodiment of the invention has a better vibration reduction effect on the wind generating set, and can ensure the operation safety and the power generation benefit of the wind generating set.
In some alternative embodiments, the base 10 may include a bottom plate 11 and two support assemblies 12 disposed on the bottom plate 11, the bottom plate 11 may be a planar plate-shaped structure with a predetermined size, the guide member 20 is connected to the bottom plate 11, the two support assemblies 12 are disposed on two sides of the guide member 20 in the width direction Y of the base 10, optionally, the two support assemblies 12 are symmetrically disposed on two sides of the guide member 20, and each support assembly 12 is disposed opposite to at least one damping member 40 for supporting the damping member 40 corresponding thereto.
In a specific implementation, each of the support assemblies 12 may include a support plate 121 connected to the base plate 11, and a friction plate 122 connected to the support plate 121 and extending to the guide member 20 along the width direction Y of the base 10, the friction plate 122 and the base plate 11 being parallel to each other and spaced apart from each other, the support plate 121 being connected between the friction plate 122 and the base plate 11. Optionally, the support plate 121 is perpendicular to the friction plate 122 and the bottom plate 11. To ensure the load-bearing capacity of the friction plate 122, optionally, one end of the friction plate 122 extending to the guide member 20 is interconnected with the guide member 20. The friction plate 122 may be made of a material having a high friction coefficient as a whole, or the friction plate 122 may be made of a common material, and the surface of the friction plate 122 away from the bottom plate 11, that is, the surface of the friction plate 122 engaged with the damping member 40 may be processed to increase the roughness thereof, thereby increasing the friction coefficient of the surface.
As an alternative implementation manner, the whole guide member 20 provided by the embodiment of the present invention may be a strip-shaped guide rail extending along the length direction X of the base, and the guide member 20 further has a first side surface 22 and a second side surface 23 which are oppositely arranged in the width direction Y and are respectively connected to the arc-shaped surfaces 21. The end of the mass 30 facing the guide member 20 has a U-shaped sliding slot 34, and the mass 30 is clamped on the guide member 20 through the U-shaped sliding slot 34 and is in sliding fit with the arc-shaped surface 21 and at least one of the first side surface 22 and the second side surface 23. Optionally, the mass 30 is slidably engaged with the arc surface 21, the first side surface 22 and the second side surface 23, that is, the width of the U-shaped sliding slot 34 may be matched with the width of the guiding member 20, so that the stability of the mass 30 in running along the track of the arc surface 21 can be ensured, and the damper 100 has a better damping effect.
As an optional embodiment, in order to make the running of the mass 30 on the guide member 20 smoother, optionally, the guide wheel 35 is disposed on the side wall enclosing the U-shaped sliding slot 34, and the mass 30 can ensure the smoothness of the running of the mass 30 on the guide member 20 by the rolling fit of the guide wheel 35 with the arc-shaped surface 21 and the first side surface 22 and/or the second side surface 23 of the guide member 20, so as to better meet the vibration damping requirement of the damper 100.
In the damper 100 according to the embodiment of the present invention, the number of the damping members 40 may be two, that is, two damping members 40 are respectively connected to two ends of the mass 30 in the width direction Y of the base 10. In order to ensure the smooth operation of the mass 30, optionally, two damping members 40 are symmetrically disposed. Each damping member 40 may take a variety of forms, and in alternative embodiments, the damping member 40 may include a connecting rod 41 and a friction disk 42 rotationally coupled to each other, the friction disk 42 supported on the friction plate 122 and frictionally engaging the friction plate 122, the damping member 40 rotationally coupled to the mass 30 via the connecting rod 41.
The friction disk 42 may be a disk-shaped structure, the friction disk 42 may also be made of a material with a high coefficient of friction, and of course, the surface of the friction disk 42 facing the friction plate 122 may be processed so that the damping member 40 may dissipate the kinetic energy of the mass 30 during movement by the motion friction between the friction disk 42 and the friction plate 122.
In order to ensure that damping member 40 can be better connected to mass 30, connecting rod 41 may optionally include a first rod 411 and a second rod 412 that are rotatably connected, where first rod 411 is disposed parallel to base plate 11 and extends along width direction Y of base 10, second rod 412 is connected between friction disc 42 and first rod 411 and is hinged to friction disc 42 and first rod 411, respectively, and an end of first rod 411 remote from second rod 412 is hinged to mass 30.
When the mass 30 is vibrated, the kinetic energy of the mass 30 can be transmitted to the friction disc 42 through the connecting rod 41, so as to drive the friction disc 42 to move relative to the friction plate 122, and further to enable the friction disc 42 and the friction plate to move and rub, thereby dissipating and absorbing the kinetic energy of the mass 30 during the movement. The damping member 40 has a high adaptability to the environment in the form of friction energy consumption, and can improve the application range of the damper 100. The connecting rod 41 adopts the above structure and the connection mode with the mass block 30 and the friction disc 42, so that the friction disc 42 and the friction plate 122 can be always attached to each other, and the vibration damping performance of the damper 100 can be better optimized.
As an alternative embodiment, the friction disk 42 is further provided with a magnetic absorption member 43, the friction disk 42 is located between the magnetic absorption member 43 and the friction plate 122 and can be magnetically absorbed with the friction plate 122, and by providing the magnetic absorption member 43 and making it magnetically absorbed with the friction disk 42, a certain positive pressure can be applied between the friction disk 42 and the friction plate 122, so as to ensure that a greater friction force is generated between the friction disk 42 and the friction plate 122, so that when the mass block 30 absorbs the vibration energy of the wind turbine generator set to move, the purpose of fast energy consumption can be achieved through the greater friction force between the friction plate 122 and the friction disk 42, thereby achieving the purpose of damping the tower 200, that is, increasing the energy consumption speed when the friction disk 42 moves. In specific implementation, the magnetic attraction member 43 may be magnetic steel, and of course, other materials may be adopted as long as the requirement of increasing the energy consumption of the friction disc 42 during movement can be met.
In some optional examples, the magnetic absorbing member 43 may be a bar-shaped structural body extending along the length direction X, and optionally, the magnetic absorbing member 43 and the friction disc 42 may be detachably connected, for example, connecting holes may be correspondingly formed in the magnetic absorbing member 43 and the friction disc 42, and a connecting member such as a bolt may be disposed in the connecting hole, so as to achieve the detachable connection between the magnetic absorbing member 43 and the friction disc 42. With the above arrangement, the magnetic attraction member 43 and the friction disk 42 can be easily processed and connected to each other. More importantly, the magnetic adsorption member 43 and the friction disc 42 are detachably connected, so that the energy consumption speed of the damper 100 is adjustable, that is, the friction force between the friction plates 122 during the movement of the friction disc 42 can be changed by replacing the magnetic adsorption member 43 with different magnetic strengths, and the energy consumption speed of the whole damper 100 is further adjusted.
In order to further improve the operation safety of the damper 100, optionally, the base 10 further includes a stop plate 13, the stop plates 13 are respectively connected to both ends of the bottom plate 11 in the length direction X, and the stop plates 13 abut against the guide member 20. When the movement speed of the mass block 30 is low, the end portion of the arc-shaped surface 21 tilted up can be used for blocking, the kinetic energy of the mass block 30 is converted into potential energy, and the potential energy can be decelerated to zero when the kinetic energy does not run to the end portion of the arc-shaped surface 21 in the length direction X.
When the mass block 30 operates at a high speed along the arc track of the arc surface 21, the mass block 30 can be blocked by the tilting end of the arc surface 21 to convert the kinetic energy of the mass block 30 into potential energy, so that the speed of the mass block 30 is greatly reduced, the mass block 30 with a low speed is blocked by the stop plate 13, the mass block 30 is further prevented from being separated from the guide component 20, and the vibration reduction effect of the damper 100 is ensured. Meanwhile, the mass blocks 30 decelerated at the two ends of the arc-shaped surface 21 have lower impact force on the stop plate 13, so that the stop plate 13 can be prevented from being damaged by impact, and the service life of the damper 100 is prolonged.
In order to further reduce the impact of the mass 30 on the stop plates 13, an elastic body 14 is optionally arranged on the surface of each stop plate 13 facing the mass 30, and the projection of the elastic body 14 in the length direction X at least partially covers the mass 30. The mass block 30 decelerated at the two ends of the arc-shaped surface 21 is in contact with the elastic body 14 in advance, the speed of the mass block 30 is further reduced by compressing the elastic body 14, the impact on the stop plate 13 is reduced, the service life of the damper 100 is ensured, and the operation safety and the power generation benefit of the wind generating set are improved. The elastic body 14 may be any structure that can be compressed and deformed under a predetermined pressure, such as a rubber body or a sponge body.
The damper 100 provided by the embodiment of the present invention may have various forms of the mass 30, and in some alternative examples, the mass 30 may include a substrate 31, a plurality of sheets 32 stacked on the substrate 31, and a fastener 33, and the plurality of sheets 32 may be detachably connected to the substrate 31 through the fastener 33. The mass block 30 adopts the above structure, and the mass of the mass block 30 can be changed by adjusting the shape of the sheet-shaped body 32 connected with the substrate 31, so that the application range of the damper 100 is wider, and the damping requirements of wind generating sets of different models can be met.
When the mass 30 is configured as described above, the U-shaped sliding slot 34 and the guide wheel 35 may be disposed on the substrate 31, and the damping member 40 may be connected to the sheet 32, and of course, when the substrate 31 is thick enough, the damping member 40 may also be connected to the substrate 31, and may be specifically adjusted as required.
The above embodiments of the present invention have been described by taking the number of the damping members 40 as an example, it is understood that two damping members 40 are only an optional embodiment, and in some other embodiments, when the size of the mass 30 in the length direction X of the base 10 is large enough, the number of the damping members 40 may also be an even number, such as four, six, etc., and the even number of the damping members 40 are oppositely disposed at both ends of the mass 30 and rotatably connected with the mass 30, which can also increase the requirement for the energy consumption speed of the mass 30.
Moreover, the damper 100 according to each of the above embodiments of the present invention utilizes the principle of friction energy dissipation, which is a preferred embodiment, in some other examples, the damping member 40 may also be in the form of a viscous liquid disposed between the base 10 and the mass block 30, or in the form of a magnetic damper disposed between the base 10 and the mass block 30, and in cooperation with the guide member 20 having the arc-shaped surface 21 provided in the embodiments of the present invention, the damping requirement of the damper 100 on the wind turbine generator set can also be satisfied.
Thus, when applied to a wind turbine generator set, the damper 100 provided by the embodiment of the present invention may be disposed in a nacelle 300 of the wind turbine generator set, and connected to a nacelle platform 301 through the base 10. When the wind generating set operates and the nacelle 300 vibrates with the tower 200, due to frequency matching, part of energy of the vibration of the tower 200 is transmitted to the mass block 30 of the damper 100 through the nacelle platform 301, so that the mass block 30 moves along the arc-shaped track of the arc-shaped face 21, and kinetic energy generated when the mass block 30 moves is absorbed by the damping parts 40 which are installed on two sides of the mass block 30 and supported on the base 10 during the movement of the mass block 30, so that the aim of damping the wind generating set is fulfilled.
When the external vibration energy is large and the reciprocating motion amplitude of the mass block 30 is large, because the arc-shaped surface 21 is concave towards the direction close to the base 10, along with the upward tilting of the two ends of the arc-shaped surface 21, the kinetic energy of the mass block 30 is gradually converted into potential energy, the speed will be reduced, the effects of decelerating and blocking the mass block 30 can be achieved, and the mass block 30 is prevented from being separated from the guide part 20, so that the damper 100 provided by the embodiment of the invention has better safety performance while ensuring better vibration damping effect on the wind generating set, and can ensure the operation safety and the power generation benefit of the wind generating set. In addition, the damper 100 provided by the embodiment of the invention can also realize the frequency of the damper 100 by utilizing the arc-shaped surface 21 of the guide part 20, can reduce the cost, can always ensure that the frequency of the damper 100 is matched with the vibration frequency of the wind generating set, and can ensure that the damper 100 runs for a long time and is not damaged.
Meanwhile, when the damper 100 in the form is applied to a wind generating set, the damper 100 in the embodiment of the invention can be arranged in the engine room 300 of the wind generating set due to small occupied space, so that the problem of limited space of the damper 100 can be avoided, the installation, transportation and maintenance costs of the damper 100 are reduced, and the operation convenience is improved.
Moreover, compared with the damper 100 with other structural forms in the prior art, such as the swing type damper 100, which cannot be installed in the nacelle 300 due to structural limitations, the damper 100 provided in the embodiment of the present invention can effectively improve the vibration damping effect of the damper 100 by raising the installation position of the damper 100 from the inside of the tower 200 to the nacelle 300, and the nacelle 300 is located at the top of the tower 200.
The wind generating set provided by the embodiment of the invention comprises the damper 100 of each embodiment, and the damper 100 is positioned on the cabin platform 301 in the cabin 300, so that the vibration reduction effect is good, the first-order vibration problem of the tower 200 can be effectively solved, the vibration amplitude of the wind generating set is further effectively reduced, and the wind generating set has higher safety performance and power generation benefit.
As an alternative embodiment, the present invention provides a wind turbine generator set, when the damper 100 of each of the above embodiments is adopted, wherein the extending direction of the guide member 20 intersects with the rotation axis 403 of the impeller 400, and the intersecting angle is any value between 60 ° and 120 °, including both end values of 60 ° and 120 °, optionally any value between 80 ° and 100 °, further optionally 90 °. Through the arrangement, even if the wind generating set does yawing motion, the damper 100 is arranged in the engine room 300 and can perform yawing motion along with the engine room 300, so that the motion direction of the mass block 30 can be always kept consistent with the main vibration direction of the wind generating set, and compared with other types of dampers 100 arranged in the tower 200, the damper does not need to be provided with a bidirectional guide rail, and further, the damper has the advantages of small occupied space, low cost and the like.
Referring to fig. 5, fig. 5 is a flow chart illustrating a method for installing the damper 100 according to the embodiment of the invention. The embodiment of the present invention further provides an installation method of a damper 100, which is used for installing the damper 100 of any of the above embodiments on a nacelle platform 301 of a wind turbine generator system, and includes the following steps:
s100, a step of mounting the base 10 and the guide part 20, wherein the base 10 and the guide part 20 are mutually laminated and connected, the base 10 is connected with the cabin platform 301, the base 10 has a preset length and width, the guide part 20 extends along the length direction X of the base 10, the surface of the guide part 20 far away from the base 10 is an arc-shaped surface 21, and the arc-shaped surface 21 is sunken towards the direction close to the base 10.
S200, a mass block 30 mounting step, namely providing the mass block 30, clamping the mass block 30 on the guide part 20 and matching with the arc-shaped surface 21, so that the mass block 30 can move along the arc-shaped track of the arc-shaped surface 21;
s300, a damping member 40 mounting step, providing damping members 40, respectively connecting the damping members 40 to two sides of the mass 30 along the width direction Y of the base 10, and adjusting the damping members 40 so that one side of the damping members 40 away from the mass 30 is always supported on the base 10 to absorb kinetic energy of the mass 30 during movement.
In step S100, a connecting bolt hole may be reserved on the support beam of the nacelle platform 301, the base 10 to which the guide member 20 is connected may be detachably connected to the support beam of the nacelle platform 301 by a bolt, and an extending direction of the guide member 20, that is, an included angle between the length direction X of the base 10 and the rotation direction of the impeller 400 of the wind turbine generator system may be set to any value between 60 ° and 120 °.
In step S200, the mass 30 is provided to include a substrate 31, a plurality of sheets 32, and fasteners 33, after a predetermined number of sheets 32 are stacked on the substrate 31, the substrate 31 and the predetermined number of sheets 32 are penetrated and connected to each other by the fasteners 33 to form the mass 30, and then the mass 30 is clamped on the guide portion. When the proof mass 30 includes the guide wheel 35 engaged with the guide member 20, the guide wheel 35 may be mounted on the substrate 31 in advance before the proof mass 30 is stuck to the guide member 20.
In step S300, when the damping member 40 includes the connecting rod 41 and the friction disk 42 rotatably connected to each other, the damping member 40 may be adjusted such that the side of the damping member 40 away from the mass 30 is always supported on the base 10 and frictionally engaged with the base 10. When the damper 100 includes the magnetic adsorption member 43, the magnetic adsorption member 43 may be connected to the damping member 40 after the damping member 40 is supported by the base 10 on the side away from the mass 30 in step S300.
The installation method of the damper 100 provided by the embodiment of the invention is simple to operate, is convenient for installing the damper 100 on the cabin platform 301 of the wind generating set, and can ensure the vibration reduction effect of the damper 100 on the wind generating set.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (14)
1. A damper (100), comprising:
a base (10) having a predetermined length and width;
the guide part (20) is connected to the base (10) in a laminated mode and extends along the length direction (X) of the base (10), the surface, away from the base (10), of the guide part (20) is an arc-shaped surface (21), and the arc-shaped surface (21) is concave towards the direction close to the base (10);
the mass block (30) is clamped on the guide part (20) and matched with the arc-shaped surface (21), and the mass block (30) can move along the arc-shaped track of the arc-shaped surface (21) in the length direction (X);
the damping parts (40) are respectively connected to two ends of the mass block (30) in the width direction (Y) of the base (10), and each damping part (40) is respectively supported on the base (10) and can absorb kinetic energy generated when the mass block (30) moves.
2. The damper (100) according to claim 1, wherein the guide member (20) further has a first side surface (22) and a second side surface (23) which are oppositely arranged in the width direction (Y) and are respectively connected with the arc-shaped surface (21), one end of the mass block (30) facing the guide member (20) is provided with a U-shaped sliding groove (34), and the mass block (30) is clamped on the guide member (20) through the U-shaped sliding groove (34) and is in sliding fit with the arc-shaped surface (21) and the first side surface (22) and/or the second side surface (23).
3. Damper (100) according to claim 2, wherein guide wheels (35) are arranged on the side walls enclosing the U-shaped runner (34), the mass (30) being in rolling engagement with the arc-shaped face (21) and the first side face (22) and/or the second side face (23) via the guide wheels (35).
4. A damper (100) according to claim 1, wherein said base (10) comprises a bottom plate (11) and two support assemblies (12) provided to said bottom plate (11), said guide member (20) being connected to said bottom plate (11), said two support assemblies (12) being provided opposite to each other in said width direction (Y) on both sides of said guide member (20), each of said support assemblies (12) being provided opposite to at least one of said damping members (40) for supporting said damping member (40).
5. A damper (100) according to claim 4, wherein each of said support assemblies (12) comprises a support plate (121) connected to said bottom plate (11) and a friction plate (122) connected to said support plate (121) and extending to said guide member (20) in said width direction (Y);
the damping member (40) comprises a connecting rod (41) and a friction disc (42) which are rotationally connected with each other, the friction disc (42) is supported on the friction plate (122) and is in friction fit with the friction plate (122), and the damping member (40) is rotationally connected with the mass block (30) through the connecting rod (41).
6. A damper (100) as claimed in claim 5 wherein said friction disc (42) is provided with a magnetically attracted member (43), said friction disc (42) being located between said magnetically attracted member (43) and said friction plate (122) and being magnetically attractable to said friction plate (122).
7. A damper (100) as claimed in claim 6 wherein said magnetic adsorbing member (43) is a bar structure removably attached to said friction disc (42).
8. Damper (100) according to claim 4, wherein the base (10) further comprises a stop plate (13), the stop plates (13) being connected to the bottom plate (11) at both ends of the length direction (X), respectively, the stop plates (13) abutting against the guide member (20) to limit the mass (30) from disengaging from the guide member (20) in the length direction (X).
9. Damper (100) according to claim 8, characterized in that an elastomer body (14) is arranged on the surface of each stop plate (13) facing the mass (30), the projection of the elastomer body (14) in the length direction (X) at least partially covering the mass (30).
10. The damper (100) according to claim 1, wherein the mass (30) comprises a base plate (31), a plurality of sheets (32) stacked on the base plate (31), and a fastening member (33), and the plurality of sheets (32) are detachably connected to the base plate (31) via the fastening member (33).
11. A wind turbine generator set, comprising:
a tower (200);
a nacelle (300) arranged at said tower (200), said nacelle (300) comprising a nacelle platform (301) arranged near one end of said tower (200);
an impeller (400) connected to the nacelle (300);
a damper (100) as claimed in any one of claims 1 to 10, said damper (100) being located within said nacelle (300), said base (10) being attached to said nacelle platform (301).
12. Wind park according to claim 11, wherein the guide member (20) extends in a direction intersecting the axis of revolution (403) of the impeller (400) at an angle of between 60 ° and 120 °.
13. A method of mounting a damper (100) for mounting the damper (100) to a nacelle platform (301), comprising the steps of:
a base (10) and guide member (20) mounting step of providing the base (10) and the guide member (20) which are connected to each other in a stacked manner, and connecting the base (10) and the nacelle platform (301), wherein the base (10) has a predetermined length and width, the guide member (20) extends in a length direction (X) of the base (10), a surface of the guide member (20) away from the base (10) is an arc-shaped surface (21), and the arc-shaped surface (21) is recessed in a direction close to the base (10);
a mass block (30) mounting step, namely providing the mass block (30), clamping the mass block (30) on the guide part (20) and matching with the arc-shaped surface (21) so that the mass block (30) can move along the arc-shaped track of the arc-shaped surface (21);
and a damping part (40) mounting step, wherein the damping part (40) is provided, the damping part (40) is respectively connected to two sides of the mass block (30) along the width direction (Y) of the base (10), and the damping part (40) is adjusted, so that one side, away from the mass block (30), of the damping part (40) is always supported on the base (10) to absorb the kinetic energy when the mass block (30) moves.
14. A mounting method of a damper (100) according to claim 13, wherein in the mass block (30) mounting step, the mass block (30) is provided to include a base plate (31), a predetermined amount of the sheet-like body (32), and a fastening member (33), and after the predetermined amount of the sheet-like body (32) is laminated on the base plate (31), the base plate (31) and the predetermined amount of the sheet-like body (32) are penetrated and connected to each other by the fastening member (33) to form the mass block (30).
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| CN201811639065.5A CN109707777B (en) | 2018-12-29 | 2018-12-29 | Damper, wind generating set and mounting method |
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| CN201811639065.5A CN109707777B (en) | 2018-12-29 | 2018-12-29 | Damper, wind generating set and mounting method |
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| CN112555320B (en) * | 2020-12-08 | 2022-09-16 | 中国民航大学 | Segmented smooth bistable negative-stiffness vibration absorber based on permanent magnet and compression spring assembly |
| CN114412261B (en) * | 2022-01-28 | 2023-05-09 | 湖南科技大学 | Multidimensional tuning mass damper for wind power generation tower |
| EP4290096A1 (en) | 2022-06-09 | 2023-12-13 | Wölfel Engineering GmbH & Co. KG. | Vibration absorber assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS61256036A (en) * | 1985-05-08 | 1986-11-13 | Mitsubishi Heavy Ind Ltd | Dynamic vibration absorber |
| JP5406042B2 (en) * | 2007-12-13 | 2014-02-05 | オイレス工業株式会社 | Wall friction damper |
| CN101852188B (en) * | 2010-06-17 | 2013-10-09 | 唐德尧 | Wind-driven generator tower frame shock absorbing device and design method thereof |
| CN202040268U (en) * | 2011-04-25 | 2011-11-16 | 同济大学 | Damping device and high wind power generation tower using same |
| CN202833843U (en) * | 2012-10-08 | 2013-03-27 | 北京金风科创风电设备有限公司 | Vibration reduction system used for wind driven generator and wind driven generator |
| DE102014000779A1 (en) * | 2014-01-24 | 2015-07-30 | Rwe Innogy Gmbh | Vibration damping device and wind turbine with vibration damping device |
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